Perfect fluid solutions of Brans-Dicke and f (R) cosmology
Özet
Brans-Dicke cosmology with an (inverse) power-law potential is revisited in the light of modern quintessence and inflation models. A simple ansatz relating scale factor and scalar field recovers most of the known solutions and generates new ones. A phase space interpretation of the ansatz is provided and these universes are mapped into solutions off (R) cosmology. (C) 2018 Elsevier Inc. All rights reserved.